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Comment:Merged in TLS 1.3 support
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SHA3-256: 737b9c0d466d2f2964a8b2beea2544c991e81ccc6b732b3f8572d322c135f8fa
User & Date: rkeene on 2019-04-09 17:55:44
Other Links: manifest | tags
Context
2019-04-09
18:13
Document the "certificate" member of the dictionary returned by "tls::status" check-in: 3323193385 user: rkeene tags: trunk
17:56
Merged in changes from trunk check-in: 03a182febb user: rkeene tags: tls-1-7
17:55
Merged in TLS 1.3 support check-in: 737b9c0d46 user: rkeene tags: trunk
17:25
Better handling of reading certificate PEM data, resolves [2059171e7d] check-in: 8e0ed4e723 user: rkeene tags: trunk
17:04
Added remaining TLSv1.3 support Closed-Leaf check-in: 569c10f3b2 user: rkeene tags: enhancement/tls-1.3
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified aclocal/tcltls_openssl.m4 from [7fc36028a7] to [c4132f494e]. 

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dnl $1 = Name of variable
dnl $2 = Name of function to check for
dnl $3 = Name of protocol
dnl $4 = Name of CPP macro to define

AC_DEFUN([TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER], [
	dnl Determine if particular SSL version is enabled
	if test "[$]$1" = "true" -o "[$]$1" = "force"; then


		AC_CHECK_FUNC($2,, [
























			if test "[$]$1" = "force"; then
				AC_MSG_ERROR([Unable to enable $3])
			fi

			$1='false'
		])

	fi

	if test "[$]$1" = "false"; then
		AC_DEFINE($4, [1], [Define this to disable $3 in OpenSSL support])
	fi

])





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dnl $1 = Name of variable
dnl $2 = Name of function to check for
dnl $3 = Name of protocol
dnl $4 = Name of CPP macro to define
dnl $5 = Name of CPP macro to check for instead of a function
AC_DEFUN([TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER], [
	dnl Determine if particular SSL version is enabled
	if test "[$]$1" = "true" -o "[$]$1" = "force"; then
		proto_check='true'
		ifelse($5,, [
			AC_CHECK_FUNC($2,, [
				proto_check='false'
			])
		], [
			AC_LANG_PUSH(C)
			AC_MSG_CHECKING([for $3 protocol support])
			AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#include <openssl/opensslv.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
# include <openssl/conf.h>
#endif
			], [
int x = $5;
			])], [
				AC_MSG_RESULT([yes])
			], [
				AC_MSG_RESULT([no])

				proto_check='false'
			])
			AC_LANG_POP([C])
		])

		if test "$proto_check" = 'false'; then
			if test "[$]$1" = "force"; then
				AC_MSG_ERROR([Unable to enable $3])
			fi

			$1='false'

		fi
	fi

	if test "[$]$1" = "false"; then
		AC_DEFINE($4, [1], [Define this to disable $3 in OpenSSL support])
	fi

])
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		AC_MSG_RESULT([yes])
	], [
		AC_MSG_RESULT([no])
		AC_MSG_ERROR([Unable to compile a basic program using OpenSSL])
	])
	AC_LANG_POP([C])


	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl2], [SSLv2_method], [sslv2], [NO_SSL2])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl3], [SSLv3_method], [sslv3], [NO_SSL3])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_0], [TLSv1_method], [tlsv1.0], [NO_TLS1])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_1], [TLSv1_1_method], [tlsv1.1], [NO_TLS1_1])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_2], [TLSv1_2_method], [tlsv1.2], [NO_TLS1_2])


	AC_CACHE_VAL([tcltls_cv_func_tlsext_hostname], [
		AC_LANG_PUSH(C)
		AC_MSG_CHECKING([for SSL_set_tlsext_host_name])
		AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)








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		AC_MSG_RESULT([yes])
	], [
		AC_MSG_RESULT([no])
		AC_MSG_ERROR([Unable to compile a basic program using OpenSSL])
	])
	AC_LANG_POP([C])

	AC_CHECK_FUNCS([TLS_method])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl2], [SSLv2_method], [sslv2], [NO_SSL2])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl3], [SSLv3_method], [sslv3], [NO_SSL3])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_0], [TLSv1_method], [tlsv1.0], [NO_TLS1])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_1], [TLSv1_1_method], [tlsv1.1], [NO_TLS1_1])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_2], [TLSv1_2_method], [tlsv1.2], [NO_TLS1_2])
	TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_3], [], [tlsv1.3], [NO_TLS1_3], [SSL_OP_NO_TLSv1_3])

	AC_CACHE_VAL([tcltls_cv_func_tlsext_hostname], [
		AC_LANG_PUSH(C)
		AC_MSG_CHECKING([for SSL_set_tlsext_host_name])
		AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
︙︙

Modified configure.ac from [3bb0de7286] to [9215a3ba47].

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	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_1='force'
	else
		tcltls_ssl_tls1_1='false'
	fi
])

dnl ## TLSv1.1: Enabled by default
tcltls_ssl_tls1_2='true'
AC_ARG_ENABLE([tlsv1.2], AS_HELP_STRING([--disable-tlsv1.2], [disable TLSv1.2 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_2='force'
	else
		tcltls_ssl_tls1_2='false'
	fi
])












dnl Enable support for a debugging build
tcltls_debug='false'
AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [enable debugging parameters]), [
	if test "$enableval" = "yes"; then
		tcltls_debug='true'
	fi








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	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_1='force'
	else
		tcltls_ssl_tls1_1='false'
	fi
])

dnl ## TLSv1.2: Enabled by default
tcltls_ssl_tls1_2='true'
AC_ARG_ENABLE([tlsv1.2], AS_HELP_STRING([--disable-tlsv1.2], [disable TLSv1.2 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_2='force'
	else
		tcltls_ssl_tls1_2='false'
	fi
])

dnl ## TLSv1.3: Enabled by default
tcltls_ssl_tls1_3='true'
AC_ARG_ENABLE([tlsv1.3], AS_HELP_STRING([--disable-tlsv1.3], [disable TLSv1.3 protocol]), [
	if test "$enableval" = "yes"; then
		tcltls_ssl_tls1_3='force'
	else
		tcltls_ssl_tls1_3='false'
	fi
])


dnl Enable support for a debugging build
tcltls_debug='false'
AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [enable debugging parameters]), [
	if test "$enableval" = "yes"; then
		tcltls_debug='true'
	fi
︙︙

Modified tls.c from [7d9b3af7fe] to [c565bf20f1].

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static int	MiscObjCmd(ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);

static int	UnimportObjCmd(ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);

static SSL_CTX *CTX_Init(State *statePtr, int proto, char *key,
			char *cert, char *CAdir, char *CAfile, char *ciphers,
			char *DHparams);

static int	TlsLibInit(int uninitialize);

#define TLS_PROTO_SSL2		0x01
#define TLS_PROTO_SSL3		0x02
#define TLS_PROTO_TLS1		0x04
#define TLS_PROTO_TLS1_1	0x08
#define TLS_PROTO_TLS1_2	0x10

#define ENABLED(flag, mask)	(((flag) & (mask)) == (mask))

/*
 * Static data structures
 */

#ifndef OPENSSL_NO_DH








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static int	MiscObjCmd(ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);

static int	UnimportObjCmd(ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);

static SSL_CTX *CTX_Init(State *statePtr, int isServer, int proto, char *key,
			char *cert, char *CAdir, char *CAfile, char *ciphers,
			char *DHparams);

static int	TlsLibInit(int uninitialize);

#define TLS_PROTO_SSL2		0x01
#define TLS_PROTO_SSL3		0x02
#define TLS_PROTO_TLS1		0x04
#define TLS_PROTO_TLS1_1	0x08
#define TLS_PROTO_TLS1_2	0x10
#define TLS_PROTO_TLS1_3	0x20
#define ENABLED(flag, mask)	(((flag) & (mask)) == (mask))

/*
 * Static data structures
 */

#ifndef OPENSSL_NO_DH
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CiphersObjCmd(clientData, interp, objc, objv)
    ClientData clientData;	/* Not used. */
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj	*CONST objv[];
{
    static CONST84 char *protocols[] = {
	"ssl2",	"ssl3",	"tls1",	"tls1.1", "tls1.2", NULL
    };
    enum protocol {
	TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_TLS1_1, TLS_TLS1_2, TLS_NONE
    };
    Tcl_Obj *objPtr;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0;








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CiphersObjCmd(clientData, interp, objc, objv)
    ClientData clientData;	/* Not used. */
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj	*CONST objv[];
{
    static CONST84 char *protocols[] = {
	"ssl2",	"ssl3",	"tls1",	"tls1.1", "tls1.2", "tls1.3", NULL
    };
    enum protocol {
	TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_TLS1_1, TLS_TLS1_2, TLS_TLS1_3, TLS_NONE
    };
    Tcl_Obj *objPtr;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0;
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    case TLS_TLS1_2:
#if defined(NO_TLS1_2)
		Tcl_AppendResult(interp, "protocol not supported", NULL);
		return TCL_ERROR;
#else
		ctx = SSL_CTX_new(TLSv1_2_method()); break;
#endif









    default:
		break;
    }
    if (ctx == NULL) {
	Tcl_AppendResult(interp, REASON(), (char *) NULL);
	return TCL_ERROR;
    }








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    case TLS_TLS1_2:
#if defined(NO_TLS1_2)
		Tcl_AppendResult(interp, "protocol not supported", NULL);
		return TCL_ERROR;
#else
		ctx = SSL_CTX_new(TLSv1_2_method()); break;
#endif
    case TLS_TLS1_3:
#if defined(NO_TLS1_3)
		Tcl_AppendResult(interp, "protocol not supported", NULL);
		return TCL_ERROR;
#else
		ctx = SSL_CTX_new(TLS_method()); break;
                SSL_CTX_set_min_proto_version (ctx, TLS1_3_VERSION);
                SSL_CTX_set_max_proto_version (ctx, TLS1_3_VERSION);
#endif
    default:
		break;
    }
    if (ctx == NULL) {
	Tcl_AppendResult(interp, REASON(), (char *) NULL);
	return TCL_ERROR;
    }
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    char *CAdir		= NULL;
    char *DHparams	= NULL;
    char *model		= NULL;
#ifndef OPENSSL_NO_TLSEXT
    char *servername	= NULL;	/* hostname for Server Name Indication */
#endif
    int ssl2 = 0, ssl3 = 0;
    int tls1 = 1, tls1_1 = 1, tls1_2 = 1;
    int proto = 0;
    int verify = 0, require = 0, request = 1;

    dprintf("Called");

#if defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_SSL3) && !defined(NO_SSL2)
    ssl2 = 1;
#endif
#if defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_SSL2) && !defined(NO_SSL3)
    ssl3 = 1;
#endif
#if defined(NO_TLS1)
    tls1 = 0;
#endif
#if defined(NO_TLS1_1)
    tls1_1 = 0;
#endif
#if defined(NO_TLS1_2)
    tls1_2 = 0;



#endif

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
	return TCL_ERROR;
    }









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    char *CAdir		= NULL;
    char *DHparams	= NULL;
    char *model		= NULL;
#ifndef OPENSSL_NO_TLSEXT
    char *servername	= NULL;	/* hostname for Server Name Indication */
#endif
    int ssl2 = 0, ssl3 = 0;
    int tls1 = 1, tls1_1 = 1, tls1_2 = 1, tls1_3 = 1;
    int proto = 0;
    int verify = 0, require = 0, request = 1;

    dprintf("Called");

#if defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_SSL3) && !defined(NO_SSL2)
    ssl2 = 1;
#endif
#if defined(NO_TLS1) && defined(NO_TLS1_1) && defined(NO_TLS1_2) && defined(NO_SSL2) && !defined(NO_SSL3)
    ssl3 = 1;
#endif
#if defined(NO_TLS1)
    tls1 = 0;
#endif
#if defined(NO_TLS1_1)
    tls1_1 = 0;
#endif
#if defined(NO_TLS1_2)
    tls1_2 = 0;
#endif
#if defined(NO_TLS1_3)
    tls1_3 = 0;
#endif

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
	return TCL_ERROR;
    }
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#endif

	OPTBOOL( "-ssl2", ssl2);
	OPTBOOL( "-ssl3", ssl3);
	OPTBOOL( "-tls1", tls1);
	OPTBOOL( "-tls1.1", tls1_1);
	OPTBOOL( "-tls1.2", tls1_2);


	OPTBAD( "option", "-cadir, -cafile, -certfile, -cipher, -command, -dhparams, -keyfile, -model, -password, -require, -request, -server, -servername, -ssl2, -ssl3, -tls1, -tls1.1 or -tls1.2");

	return TCL_ERROR;
    }
    if (request)	    verify |= SSL_VERIFY_CLIENT_ONCE | SSL_VERIFY_PEER;
    if (request && require) verify |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
    if (verify == 0)	verify = SSL_VERIFY_NONE;

    proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
    proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);
    proto |= (tls1 ? TLS_PROTO_TLS1 : 0);
    proto |= (tls1_1 ? TLS_PROTO_TLS1_1 : 0);
    proto |= (tls1_2 ? TLS_PROTO_TLS1_2 : 0);


    /* reset to NULL if blank string provided */
    if (cert && !*cert)		cert	 = NULL;
    if (key && !*key)		key	 = NULL;
    if (ciphers && !*ciphers)	ciphers	 = NULL;
    if (CAfile && !*CAfile)	CAfile	 = NULL;
    if (CAdir && !*CAdir)	CAdir	 = NULL;








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#endif

	OPTBOOL( "-ssl2", ssl2);
	OPTBOOL( "-ssl3", ssl3);
	OPTBOOL( "-tls1", tls1);
	OPTBOOL( "-tls1.1", tls1_1);
	OPTBOOL( "-tls1.2", tls1_2);
	OPTBOOL( "-tls1.3", tls1_3);

	OPTBAD( "option", "-cadir, -cafile, -certfile, -cipher, -command, -dhparams, -keyfile, -model, -password, -require, -request, -server, -servername, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, or tls1.3");

	return TCL_ERROR;
    }
    if (request)	    verify |= SSL_VERIFY_CLIENT_ONCE | SSL_VERIFY_PEER;
    if (request && require) verify |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
    if (verify == 0)	verify = SSL_VERIFY_NONE;

    proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
    proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);
    proto |= (tls1 ? TLS_PROTO_TLS1 : 0);
    proto |= (tls1_1 ? TLS_PROTO_TLS1_1 : 0);
    proto |= (tls1_2 ? TLS_PROTO_TLS1_2 : 0);
    proto |= (tls1_3 ? TLS_PROTO_TLS1_3 : 0);

    /* reset to NULL if blank string provided */
    if (cert && !*cert)		cert	 = NULL;
    if (key && !*key)		key	 = NULL;
    if (ciphers && !*ciphers)	ciphers	 = NULL;
    if (CAfile && !*CAfile)	CAfile	 = NULL;
    if (CAdir && !*CAdir)	CAdir	 = NULL;
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	    Tcl_AppendResult(interp, "bad channel \"",
		    Tcl_GetChannelName(chan), "\": not a TLS channel", NULL);
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	ctx = ((State *)Tcl_GetChannelInstanceData(chan))->ctx;
    } else {
	if ((ctx = CTX_Init(statePtr, proto, key, cert, CAdir, CAfile, ciphers,
		DHparams)) == (SSL_CTX*)0) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
    }

    statePtr->ctx = ctx;








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	    Tcl_AppendResult(interp, "bad channel \"",
		    Tcl_GetChannelName(chan), "\": not a TLS channel", NULL);
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	ctx = ((State *)Tcl_GetChannelInstanceData(chan))->ctx;
    } else {
	if ((ctx = CTX_Init(statePtr, server, proto, key, cert, CAdir, CAfile, ciphers,
		DHparams)) == (SSL_CTX*)0) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
    }

    statePtr->ctx = ctx;
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 * Side effects:
 *	constructs SSL context (CTX)
 *
 *-------------------------------------------------------------------
 */

static SSL_CTX *
CTX_Init(statePtr, proto, key, cert, CAdir, CAfile, ciphers, DHparams)
    State *statePtr;

    int proto;
    char *key;
    char *cert;
    char *CAdir;
    char *CAfile;
    char *ciphers;
    char *DHparams;








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 * Side effects:
 *	constructs SSL context (CTX)
 *
 *-------------------------------------------------------------------
 */

static SSL_CTX *
CTX_Init(statePtr, isServer, proto, key, cert, CAdir, CAfile, ciphers, DHparams)
    State *statePtr;
    int isServer;
    int proto;
    char *key;
    char *cert;
    char *CAdir;
    char *CAfile;
    char *ciphers;
    char *DHparams;
︙︙
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#endif
#if defined(NO_TLS1_2)
    if (ENABLED(proto, TLS_PROTO_TLS1_2)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif







    switch (proto) {
#if !defined(NO_SSL2)
    case TLS_PROTO_SSL2:
	method = SSLv2_method ();
	break;
#endif








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#endif
#if defined(NO_TLS1_2)
    if (ENABLED(proto, TLS_PROTO_TLS1_2)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1_3)
    if (ENABLED(proto, TLS_PROTO_TLS1_3)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif

    switch (proto) {
#if !defined(NO_SSL2)
    case TLS_PROTO_SSL2:
	method = SSLv2_method ();
	break;
#endif
︙︙
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1125










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	method = TLSv1_1_method ();
	break;
#endif
#if !defined(NO_TLS1_2)
    case TLS_PROTO_TLS1_2:
	method = TLSv1_2_method ();
	break;
#endif










    default:



        method = SSLv23_method ();

#if !defined(NO_SSL2)
	off |= (ENABLED(proto, TLS_PROTO_SSL2)   ? 0 : SSL_OP_NO_SSLv2);
#endif
#if !defined(NO_SSL3)
	off |= (ENABLED(proto, TLS_PROTO_SSL3)   ? 0 : SSL_OP_NO_SSLv3);
#endif
#if !defined(NO_TLS1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1)   ? 0 : SSL_OP_NO_TLSv1);
#endif
#if !defined(NO_TLS1_1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_1) ? 0 : SSL_OP_NO_TLSv1_1);
#endif
#if !defined(NO_TLS1_2)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_2) ? 0 : SSL_OP_NO_TLSv1_2);
#endif



	break;
    }
    
    ctx = SSL_CTX_new (method);











    
    SSL_CTX_set_app_data( ctx, (VOID*)interp);	/* remember the interpreter */
    SSL_CTX_set_options( ctx, SSL_OP_ALL);	/* all SSL bug workarounds */
    SSL_CTX_set_options( ctx, off);	/* all SSL bug workarounds */
    SSL_CTX_sess_set_cache_size( ctx, 128);

    if (ciphers != NULL)









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1140
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	method = TLSv1_1_method ();
	break;
#endif
#if !defined(NO_TLS1_2)
    case TLS_PROTO_TLS1_2:
	method = TLSv1_2_method ();
	break;
#endif
#if !defined(NO_TLS1_3)
    case TLS_PROTO_TLS1_3:
        /*
         * The version range is constrained below,
         * after the context is created.  Use the
         * generic method here.
         */
	method = TLS_method ();
	break;
#endif
    default:
#ifdef HAVE_TLS_METHOD
        method = TLS_method ();
#else
        method = SSLv23_method ();
#endif
#if !defined(NO_SSL2)
	off |= (ENABLED(proto, TLS_PROTO_SSL2)   ? 0 : SSL_OP_NO_SSLv2);
#endif
#if !defined(NO_SSL3)
	off |= (ENABLED(proto, TLS_PROTO_SSL3)   ? 0 : SSL_OP_NO_SSLv3);
#endif
#if !defined(NO_TLS1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1)   ? 0 : SSL_OP_NO_TLSv1);
#endif
#if !defined(NO_TLS1_1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_1) ? 0 : SSL_OP_NO_TLSv1_1);
#endif
#if !defined(NO_TLS1_2)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_2) ? 0 : SSL_OP_NO_TLSv1_2);
#endif
#if !defined(NO_TLS1_3)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_3) ? 0 : SSL_OP_NO_TLSv1_3);
#endif
	break;
    }
    
    ctx = SSL_CTX_new (method);

    if (!ctx) {
        return(NULL);
    }

#if !defined(NO_TLS1_3)
    if (proto == TLS_PROTO_TLS1_3) {
        SSL_CTX_set_min_proto_version (ctx, TLS1_3_VERSION);
        SSL_CTX_set_max_proto_version (ctx, TLS1_3_VERSION);
    }
#endif
    
    SSL_CTX_set_app_data( ctx, (VOID*)interp);	/* remember the interpreter */
    SSL_CTX_set_options( ctx, SSL_OP_ALL);	/* all SSL bug workarounds */
    SSL_CTX_set_options( ctx, off);	/* all SSL bug workarounds */
    SSL_CTX_sess_set_cache_size( ctx, 128);

    if (ciphers != NULL)
︙︙

Modified tls.htm from [9d6687fab1] to [2335b9e315].

︙︙
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224
225
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        <dd>Enable use of SSL v3. (<strong>default</strong>: <em>false</em>)</dd>
        <dt>-<strong>tls1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1. (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.1 (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.2</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.2 (<strong>default</strong>: <em>true</em>)</dd>


    </dl>
</blockquote>

<dl>
    <dt><a name="tls::unimport"><b>tls::unimport </b><i>channel</i></a></dt>
    <dd>Provided for symmetry to <strong>tls::import</strong>, this
      unstacks the SSL-enabling of a regular Tcl channel.  An error








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        <dd>Enable use of SSL v3. (<strong>default</strong>: <em>false</em>)</dd>
        <dt>-<strong>tls1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1. (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.1 (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.2</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.2 (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.3</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.3 (<strong>default</strong>: <em>true</em>)</dd>
    </dl>
</blockquote>

<dl>
    <dt><a name="tls::unimport"><b>tls::unimport </b><i>channel</i></a></dt>
    <dd>Provided for symmetry to <strong>tls::import</strong>, this
      unstacks the SSL-enabling of a regular Tcl channel.  An error
︙︙

Modified tls.tcl from [04fbf290ac] to [75c0c2a68a].

︙︙
45
46
47
48
49
50
51

52
53
54
55
56
57
58

        {* -autoservername discardOpts 1}
        {* -servername iopts 1}
        {* -ssl2 iopts 1}
        {* -ssl3 iopts 1}
        {* -tls1 iopts 1}
        {* -tls1.1 iopts 1}
        {* -tls1.2 iopts 1}

    }

    # tls::socket and tls::init options as a humane readable string
    variable socketOptionsNoServer
    variable socketOptionsServer

    # Internal [switch] body to validate options








>








45
46
47
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49
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51
52
53
54
55
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58
59

        {* -autoservername discardOpts 1}
        {* -servername iopts 1}
        {* -ssl2 iopts 1}
        {* -ssl3 iopts 1}
        {* -tls1 iopts 1}
        {* -tls1.1 iopts 1}
        {* -tls1.2 iopts 1}
        {* -tls1.3 iopts 1}
    }

    # tls::socket and tls::init options as a humane readable string
    variable socketOptionsNoServer
    variable socketOptionsServer

    # Internal [switch] body to validate options
︙︙

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